If we_________ sunlight_________ a dry leaf with a piece of glass, it may start burning.
| A．work; out | B．carry; out | C．focus; on | D．concentrate; on |
______ well prepared you are, you still need a lot of luck in mountain climbing.
| A．However | B．Whatever | C．No matter | D．Although |
----Did you look up the time of the high-speed trains to Shanghai?
----Yes, the early train is __________ to leave at 5:30 a.m.
| A．likely | B．possible | C．due | D．about |
There is no doubt _______ international cooperation is the key to _______ with cyber crime.
| A．whether; doing | B．that; dealing | C．whether; do | D．that; deal |
Please do me a favor----_____ my friend Mr. Smith to Youth Theater at 7:30 tonight.
| A．to invite | B．inviting | C．invite | D．invited |
It took me quite a long time to ________ the new environment here.
| A．adapt to | B．relate to | C．apply to | D．attach to |